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Technology and device for treating organic waste gas with activated carbon by means of nitrogen heating and vacuum desorption

A technology of organic waste gas and activated carbon, which is used in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of high economic operation cost, difficult waste water treatment, large steam consumption, etc., to reduce treatment costs and achieve no waste water. The effect of simple pollution and treatment process

Inactive Publication Date: 2015-10-07
江苏中远环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the method of steam heating and desorption is used for desorption, although the re-adsorption effect of granular activated carbon is very good, and the gas after adsorption can be discharged up to the standard, but it will produce a large amount of waste water that is difficult to treat when dealing with water-soluble waste gas, and it is easy to cause secondary pollution. Secondary pollution, and the consumption of steam is relatively large, and the economic operation cost is also high

Method used

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  • Technology and device for treating organic waste gas with activated carbon by means of nitrogen heating and vacuum desorption
  • Technology and device for treating organic waste gas with activated carbon by means of nitrogen heating and vacuum desorption

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Embodiment 1

[0036] A nitrogen heating vacuum desorption activated carbon organic waste gas treatment process based on the above-mentioned device is characterized in that it includes a pretreatment stage, an adsorption stage, a desorption stage and a recovery stage. The pretreatment stage is: taking into account the absorber's bearing Capacity and process requirements, before the organic waste gas enters the adsorber, it is necessary to adjust the pressure, pretreatment and temperature adjustment of the organic waste gas. The throttling and pressure reducing valve throttles and discharges, and enters the buffer tank to buffer and reduce pressure until it reaches 9kpa. The organic waste gas after pressure regulation still contains more solid particles, which need to be filtered through a filter to filter out solid particles, and then The temperature is adjusted through the heat exchanger. In order to improve the adsorbability of organic waste gas, the temperature needs to be adjusted to 45°C...

Embodiment 2

[0042] Based on the above-mentioned activated carbon organic waste gas treatment process of nitrogen heating vacuum desorption, it is characterized in that it includes a pretreatment stage, an adsorption stage, a desorption stage and a recovery stage. The pretreatment stage is: first, the organic waste gas discharged from industrial production Exhaust gas pressure regulation, pressurized by a pressurized fan, or throttled by a throttle and pressure reducing valve into a buffer tank for buffering and decompression, until the pressure of the organic waste gas reaches 8kpa, and the organic waste gas after the pressure adjustment also contains more Solid particles need to be filtered through a filter to remove solid particles, and then the temperature is adjusted through a heat exchanger. In order to improve the adsorbability of organic waste gas, its temperature needs to be adjusted to 855°C;

[0043] The adsorption stage is: the organic waste gas that has undergone pressure...

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Abstract

The invention provides a technology and a device for treating organic waste gas with activated carbon by means of nitrogen heating and vacuum desorption. The technology is characterized by including a pretreatment stage, an adsorption stage, a desorption stage and a recycling stage. The device comprises an adsorber, a heater, a vacuum pump, a condenser and a recycling tank. The technology and the device have the advantages that the technology and the device are different from existing waste gas treatment by means of steam desorption, nitrogen heating desorption and vacuum desorption are combined with each other, accordingly, the desorption efficiency can be enhanced, steam consumption can be reduced to a great extent, and a large quantity of wastewater and secondary pollution can be prevented; granular activated carbon in the adsorber does not need to be dried and regenerated, accordingly, the technology and the device are free of steam consumption and wastewater pollution, low in energy consumption and high in desorption efficiency, and are environmental friendly, energy can be saved, excellent desorption effects can be realized, the organic waste gas treatment cost can be reduced, the technology is simple, and requirements of discharge standards can be met after the waste gas is treated by the aid of the technology and the device.

Description

technical field [0001] The invention relates to organic waste gas treatment, in particular to an activated carbon organic waste gas treatment process and a device thereof through nitrogen heating and vacuum desorption. Background technique [0002] At present, most of the processes of organic waste gas treatment by granular activated carbon adsorption method are as follows: firstly, the organic waste gas is pretreated, pressure adjusted, and temperature adjusted, and then adsorbed by the adsorber, desorbed by steam heating, and the desorbed oil gas is condensed into a liquid mixture by the condenser (or liquid oil) is recovered, and the clean gas after adsorption is discharged at high altitude, so as to achieve the purpose of emission reduction and emission compliance. A desorption method is applied in this type of process, that is, steam heating desorption. If the method of steam heating and desorption is used for desorption, although the re-adsorption effect of granular...

Claims

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Application Information

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IPC IPC(8): B01D53/047
Inventor 陆旸屈智勇牟祖泽
Owner 江苏中远环保科技有限公司
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